See the domains Google treats as sources for entity facts.
Trusted sources for entity facts
Dataset: 62,202 isReference domains |
entities
Proprietary analysis of Google's entity validation patterns across the Knowledge Graph.
Where these domains come from
1,738,093
Domains monitored
62,202
isReference domains
3.58% qualify
23,295,240
URLs monitored
74,400,350
Entities tracked
💡 Even Small Niche Domains Have isReference Authority
Examples from our dataset (December 2025):
| kalicube.com | 21 entities |
| searchengineland.com | 11 entities |
| jasonbarnard.com | 86 entities |
| searchenginejournal.com | 270 entities |
| entrepreneur.com | 1,292 entities |
| forbes.com | 2,823 entities |
Your niche-specific domains may have similar authority in your category.
Top 100 isReference Domains for All Entity Types
| Rank | Domain | Entity Count |
|---|---|---|
| 1 | wikipedia.org | 494,942 |
| 2 | linkedin.com | 149,388 |
| 3 | instagram.com | 131,884 |
| 4 | x.com | 71,107 |
| 5 | facebook.com | 63,958 |
| 6 | legacy.com | 60,395 |
| 7 | namu.wiki | 35,941 |
| 8 | google.com | 33,295 |
| 9 | youtube.com | 30,577 |
| 10 | britannica.com | 25,144 |
| 11 | crunchbase.com | 24,378 |
| 12 | dictionary.com | 24,374 |
| 13 | reddit.com | 19,369 |
| 14 | amazon.com | 18,759 |
| 15 | fandom.com | 16,973 |
| 16 | letterboxd.com | 12,857 |
| 17 | microsoft.com | 11,168 |
| 18 | wiktionary.org | 10,299 |
| 19 | apple.com | 9,571 |
| 20 | rottentomatoes.com | 9,208 |
| 21 | justwatch.com | 7,526 |
| 22 | imdb.com | 7,454 |
| 23 | yahoo.com | 6,696 |
| 24 | tiktok.com | 6,597 |
| 25 | cambridge.org | 6,272 |
| 26 | shopee.co.id | 6,044 |
| 27 | indeed.com | 5,944 |
| 28 | espn.com | 5,928 |
| 29 | quora.com | 5,416 |
| 30 | hbomax.com | 5,306 |
| 31 | genius.com | 4,951 |
| 32 | epicgames.com | 4,864 |
| 33 | shopee.ph | 4,537 |
| 34 | billboard.com | 4,529 |
| 35 | spotify.com | 4,349 |
| 36 | vocabulary.com | 4,277 |
| 37 | time.is | 4,266 |
| 38 | wikiwand.com | 4,135 |
| 39 | nhl.com | 4,098 |
| 40 | forbes.com | 4,042 |
| 41 | github.com | 3,984 |
| 42 | history.com | 3,959 |
| 43 | bing.com | 3,933 |
| 44 | dictionary.net | 3,849 |
| 45 | thesaurus.com | 3,635 |
| 46 | bbc.co.uk | 3,614 |
| 47 | pornhub.com | 3,594 |
| 48 | deel.com | 3,562 |
| 49 | bloomberg.com | 3,566 |
| 50 | bbc.com | 3,550 |
| 51 | nfl.com | 3,492 |
| 52 | loc.gov | 3,488 |
| 53 | independent.co.uk | 3,388 |
| 54 | google.co.il | 3,359 |
| 55 | temu.com | 3,310 |
| 56 | nintendo.com | 3,299 |
| 57 | inc.com | 3,194 |
| 58 | gov.uk | 3,032 |
| 59 | merriam-webster.com | 2,998 |
| 60 | search.google | 2,929 |
| 61 | eo-paris.fr | 2,919 |
| 62 | nba.com | 2,884 |
| 63 | soundcloud.com | 2,869 |
| 64 | trustpilot.com | 2,838 |
| 65 | fifa.com | 2,781 |
| 66 | goodreads.com | 2,756 |
| 67 | mubi.com | 2,713 |
| 68 | radiofrance.fr | 2,710 |
| 69 | uk.com | 2,705 |
| 70 | entrepreneur.com | 2,654 |
| 71 | nih.gov | 2,648 |
| 72 | amazon.co.uk | 2,618 |
| 73 | wordpress.org | 2,562 |
| 74 | theguardian.com | 2,565 |
| 75 | delta.com | 2,530 |
| 76 | researchgate.net | 2,515 |
| 77 | steampowered.com | 2,506 |
| 78 | shopee.sg | 2,501 |
| 79 | house.gov | 2,484 |
| 80 | google.com.br | 2,481 |
| 81 | ms-ci.co.il | 2,468 |
| 82 | reuters.com | 2,462 |
| 83 | netflix.com | 2,444 |
| 84 | usnews.com | 2,426 |
| 85 | stackoverflow.com | 2,342 |
| 86 | aliexpress.com | 2,340 |
| 87 | stanford.edu | 2,314 |
| 88 | zhihu.com | 2,306 |
| 89 | playstation.com | 2,283 |
| 90 | ebay.com | 2,264 |
| 91 | the-independent.com | 2,261 |
| 92 | grammy.com | 2,245 |
| 93 | xhamster.com | 2,241 |
| 94 | nasa.gov | 2,210 |
| 95 | pinterest.com | 2,211 |
| 96 | one-line.com | 2,193 |
| 97 | gog.com | 2,192 |
| 98 | upenn.edu | 2,189 |
| 99 | watch.plex.tv | 2,175 |
| 100 | public.com | 2,164 |
| 101+ | 62,102 additional niche-specific domains in full dataset covering 72,870,828 additional entities | |
Why This Data Matters
Google validates entity information through patterns of corroborating mentions across trusted domains. This list shows where Google recognizes all entity types - but here's the catch: entity authority is extremely niche-specific.
Entity Validation at Scale
Google's Knowledge Graph requires consistent entity recognition across validated domains.
- Only 3.58% of domains (62,202 out of 1,738,093) qualify as isReference
- Brands typically need ~30 entity-validated url for a stable Knowledge Panel
- Each niche has unique entity authority patterns
- Generic "authority lists" miss 95%+ of niche-specific opportunities
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